论文标题
相互作用的二维电子系统的自旋大厅电导率
Spin Hall conductivity of interacting two-dimensional electron systems
论文作者
论文摘要
我们考虑二维电子系统，该系统具有短量的非磁性疾病潜力，库仑相互作用和Rashba自旋轨道耦合。在Keldysh形式主义中纳入的路径综合方法用于得出半经典绿色功能的动力学方程，并应用了线性响应理论中的旋转电流。我们讨论了自旋霍尔电导率的频率依赖性，并进一步阐明了电子相互作用在有限温度下的弹道和扩散状态的作用。我们认为，对自旋霍尔效应的相互作用校正源于量子干扰过程，其大小是根据所考虑模型参数估算的。
We consider a two-dimensional electron system subjected to a short-ranged nonmagnetic disorder potential, Coulomb interactions, and Rashba spin-orbit coupling. The path-integral approach incorporated within the Keldysh formalism is used to derive the kinetic equation for the semiclassical Green's function and applied to compute the spin current within the linear response theory. We discuss the frequency dependence of the spin Hall conductivity and further elucidate the role of electron interactions at finite temperatures for both the ballistic and diffusive regimes of transport. We argue that interaction corrections to the spin Hall effect stem from the quantum interference processes whose magnitude is estimated in terms of parameters of the considered model.
